Marseille 2001 Conference on lensing matter and gravitational lensing

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Our communication at the 2001 Marseille conference,
organized by the Marseille Astrophysics Laboratory
entitled: "Where is the matter?" (où est la matière ?)

Twin matter versus dark matter

1 - Abstract and beginning of the article

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Link

Abstract

What about negative masses and
energies?

2D simulation of the large-scale structure in terms of interaction between two populations,
with opposite masses.

( 2D simulation of the large-scale structure, work by ... 1992 )

A possible scenario for galaxy formation.

Galaxies confined by surrounding twin matter counter-pressure.

( "missing mass effect": galaxies confined by surrounding repulsive twin matter )

Spiral structure.

( spiral structure: result of the "dynamical friction of galaxies on their twin matter environment." Rotation curves recovered. Work by ... 1993 )

2 - Negative gravitational lensing. Exact Schwarzschild solutions, conjugated.

Link

Gravitational lensing due to negative mass matter.

( strong gravitational lensing effects are not absolute proof of the existence of "dark matter")

Exotic matter or exotic geometry?

( an alternative way of viewing things, neither more nor less speculative )

First geometrical interpretation of the dark matter phenomenon.

Second geometrical interpretation of the dark matter phenomenon.

The question of the repulsive power of vacuum. An alternative answer.

( the twin universe responsible for the re-acceleration of expansion )

Newton’s law and Poisson equation.

( twin cosmology in Newtonian approximation )

Scalar curvatures.

( conjugated scalar curvatures )

3 - A complete cosmological evolution model. Coupling with the concept of "variable constants" during the radiation era.

Link

The radiation era.

( constants that vary depending on the value of radiation pressure )

The homogeneity of the Universe.

( alternative to Linde's inflationary scenario: a cosmological horizon varying as the scale factor R )

When the adverb “before” fails.

( how to account for time? An elementary clock )

Joint gravitational instabilities.

( two coupled Jeans equations )

The confinement of spheroidal galaxies.

Newton’s law and Poisson equation.

( twin cosmology in Newtonian approximation )

Scalar curvatures.

( conjugated scalar curvatures )

4 - What could twin matter be made of?

Link

What
twin matter could be made of.

( approach through dynamical group theory )

PT-Symmetry and CPT-symmetry.

( physical meaning of PT and CPT symmetries )

Leaking neutron star model: a challenger to black hole model.

( alternative to the black hole model: the "leaking" neutron star )

5 - Do black holes exist?

Link

Black holes do not exist.

( theme of the hypertoroidal bridge, wormhole between the universe and its twin )

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